(Source: USA Today) - Philip Weeks fondly remembers the days when his wife of 56 years, June, was a nurse and an artist whose paintings were compared to Rembrandt's. Her paintings still hang in their home in Lynchburg, Virginia, but almost everything else has changed for the couple after June was diagnosed with possible Alzheimer's.

In one moment, the retired Charismatic Episcopal bishop said, she would lean over to kiss him. "An hour later, she looked at me and said, 'Who are you?'"

When the person you married goes through a dramatic change, what's a spouse to do? As Valentine's Day approaches, clergy, ethicists and brain injury experts agree: There are no easy answers. It often means a new definition of love.